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US 11,661,672 B2Granted
Method for producing a sheet from a melt by imposing a periodic change in the rate of pull
AssigneeCarnegie Mellon University
InventorsB. Erik Ydstie, Eyan Peter Noronha
Life of this patent
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Abstract
A method of forming crystalline sheets using a Horizontal Ribbon Growth process, where the sheet of material formed in the process is withdrawn from a crucible in a specified manner to reduce instabilities in the process and to regulate crystal growth dynamics.
Claims17
A method for growing a sheet of material comprising:
- melting the material in a crucible to form a melt;
- cooling a top surface of the melt using a cooling device to form a solid sheet on the top surface of the melt;
- and
- withdrawing the sheet from the crucible in a first direction, wherein a rate of the withdrawal is changed periodically in a sinusoidal manner relative to a constant velocity.
1 more element
A method for growing a sheet of material comprising:
- melting the material in a crucible to form a melt;
- cooling a top surface of the melt using a cooling device to form a solid sheet on the top surface of the melt, wherein a solidification front forms at a boundary between the solid sheet and the melt;
- and
- withdrawing the sheet from the crucible in a first direction, wherein oscillations are introduced to create a relative movement of the solidification front.
1 more element
Dependencies are inferred from the claim text.